hi all
I am trying to configure chap authentication with PPP encapsulation !
I am able to ping eachother if I remove Chap authentication
(this router R1 is the authenticator)
username CCIE password 0 EXPERT
interface Serial1/3
ip address 10.1.1.1 255.255.255.0
encapsulation ppp
ppp authentication chap
end
(this router R2 should get authentication to the R1)
interface Serial0/1
ip address 10.1.1.2 255.255.255.0
encapsulation ppp
clock rate 64000
ppp authentication chap
ppp chap hostname CCIE
end
on R2 I get these
*Mar 1 01:58:44.631: %LINK-3-UPDOWN: Interface Serial0/1, changed state to down
*Mar 1 01:58:46.630: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up
*Mar 1 01:58:56.727: %LINK-3-UPDOWN: Interface Serial0/1, changed state to down
*Mar 1 01:58:58.730: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up
*Mar 1 01:59:04.792: %LINK-3-UPDOWN: Interface Serial0/1, changed state to down
*Mar 1 01:59:06.791: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up
*Mar 1 01:59:08.822: %LINK-3-UPDOWN: Interface Serial0/1, changed state to down
I tried also to insert command PPP chap password EXPERT under R2 int ser 0/1, and then the flapping disappeared on R2 and appeared on R1 !!! (strange)
what could be the issue ?
thanks,